/*!	 metadatatreestore.cpp
**	 Template File
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**	Copyright (c) 2008 Chris Moore
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifdef USING_PCH
#	include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#	include <config.h>
#endif

#include <synfig/general.h>

#include "metadatatreestore.h"
#include <synfigapp/canvasinterface.h>

#include <gui/localization.h>

#endif

using namespace std;
using namespace etl;
using namespace synfig;
using namespace studio;

static MetaDataTreeStore::Model& ModelHack()
{
    static MetaDataTreeStore::Model* model(0);

    if (!model) {
        model = new MetaDataTreeStore::Model;
    }

    return *model;
}

MetaDataTreeStore::MetaDataTreeStore(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface_):
    Gtk::TreeStore(ModelHack()),
    canvas_interface_(canvas_interface_)
{
    // Connect the signal
    get_canvas()->signal_meta_data_changed().connect(sigc::mem_fun(*this, &MetaDataTreeStore::meta_data_changed));

    rebuild();
}

MetaDataTreeStore::~MetaDataTreeStore()
{
    if (getenv("SYNFIG_DEBUG_DESTRUCTORS")) {
        synfig::info("MetaDataTreeStore::~MetaDataTreeStore(): Deleted");
    }
}

Glib::RefPtr<MetaDataTreeStore>
MetaDataTreeStore::create(etl::loose_handle<synfigapp::CanvasInterface> canvas_interface_)
{
    return Glib::RefPtr<MetaDataTreeStore>(new MetaDataTreeStore(canvas_interface_));
}

void
MetaDataTreeStore::meta_data_changed(synfig::String /*key*/)
{
    rebuild();
}

void
MetaDataTreeStore::rebuild()
{
    clear();

    std::list<String> keys(get_canvas()->get_meta_data_keys());

    for (; !keys.empty(); keys.pop_front()) {
        Gtk::TreeRow row(*append());
        row[model.key] = keys.front();
    }
}

void
MetaDataTreeStore::get_value_vfunc(const Gtk::TreeModel::iterator& iter, int column, Glib::ValueBase& value)const
{
    if (column >= get_n_columns_vfunc()) {
        g_warning("MetaDataTreeStore::set_value_impl: Bad column (%d)", column);
        return;
    }

    if (column == model.data.index()) {
        synfig::String key((Glib::ustring)(*iter)[model.key]);
        g_value_init(value.gobj(), G_TYPE_STRING);
        g_value_set_string(value.gobj(), get_canvas()->get_meta_data(key).c_str());
        return;
    } else {
        Gtk::TreeStore::get_value_vfunc(iter, column, value);
    }
}

void
MetaDataTreeStore::set_value_impl(const Gtk::TreeModel::iterator& iter, int column, const Glib::ValueBase& value)
{
    if (column >= get_n_columns_vfunc()) {
        g_warning("MetaDataTreeStore::set_value_impl: Bad column (%d)", column);
        return;
    }

    if (!g_value_type_compatible(G_VALUE_TYPE(value.gobj()), get_column_type_vfunc(column))) {
        g_warning("MetaDataTreeStore::set_value_impl: Bad value type");
        return;
    }

    if (column == model.data.index()) {
        Glib::Value<Glib::ustring> x;
        g_value_init(x.gobj(), model.data.type());
        g_value_copy(value.gobj(), x.gobj());

        synfig::String key((Glib::ustring)(*iter)[model.key]);
        synfig::String new_data(x.get());

        get_canvas_interface()->set_meta_data(key, new_data);
    } else {
        Gtk::TreeStore::set_value_impl(iter, column, value);
    }
}